Active clinical trials for "Parathyroid Diseases"

Objectives: To better define the differences in molecular genetics of parathyroid tumors in patients with MEN1, single gland parathyroid disease in patients less than 50 years old and single gland disease in patients greater than 50 years old. To better define the incidence of HRPT2 mutation in young patients with primary hyperparathyroidism and determine whether routine testing in these patients is indicated.

Primary hyperparathyroidism (PHPT) and Hypoparathyroidism (HP) are two of the most frequent disorder of Calcium-Phosphorus (Ca-P) metabolism. The Ca/P ratio is an accurate tool to differentiate patients with PHPT from healthy subjects, according to a previous single-centre study. The reliability of this index is based on the fact that serum Ca and P are inversely related together either in healthy subjects or in patients with PHPT and HP.

This study is being conducted to identify altered genetic factors that may exist and influence endocrine cancers in unrelated MEN1 families with different cancers. A grading system will be developed for endocrine cancers, including pancreatic cancers, thymus gland cancers, parathyroid disease and MEN1 syndrome as low-risk and high-risk to improve screening and timing of surgery.

The purpose of this study is to analyze the findings of 30 surgeons and 30 nuclear radiologists of 61 individual thyroid scans. The goal is to determine if surgeons are more prone to making a definitive diagnosis based on a given scan than a nuclear radiologist. Accuracy of localization of the two groups will be analyzed. A secure website has been designed to which the physician will be able to login and view and rate the quality of each image and make a localizing diagnosis. Once they are finished, they will not be able to make any more changes, and their responses will be compared to the responses of their colleagues. The results will be analyzed to find if there is a significant variation in the ratings between the surgeons and the nuclear radiologists as to the quality, location, and number of parathyroid glands, if any, on the scans.

The goal of this study is to help better determine the complication rates for endocrine surgery across the nation for both benign and malignant disease. It is our hypothesis that the complication rates are low overall and that malignant disease results in a higher complication rate than benign disease. This study will do a database review from all University HealthSystem Consortium (UHC).

This study is designed as a prospective non-randomized longitudinal single-center cohort study. It will enroll around 120 patients undergoing total thyroidectomy with data being collected from September 2019 up to December 2019. The hypothesis is that a significant association and cut-off point in PTH levels may be established with regard to postoperativne hypocalcaemia. Primary outcome measures are presence of hypocalcemia on the first and fifth postoperative day. Secondary outcome measures are the need for calcium supplement therapy during the first five postoperative days and amount of medication given. Associations between variables will be assessed using Spearman's rho rank correlation coefficient, the Kruskal-Wallis test for independent samples and a logistic regression model to test statistically significant correlations between PTH and serum calcium values as a primary end point.

The purpose of this study is to determine whether the serum levels of certain calcium-binding proteins may be helpful in the diagnosis and management of metabolic bone diseases.

This study is designed as a prospective non-randomized longitudinal single- center cohort study to evaluate the importance of correcting total serum calcium levels. It will enroll around 100 patients undergoing total thyroidectomy with data being collected from March 2020 up to August 2020. The aim of this study is to determine whether total serum calcium level should be corrected for serum albumin in assessing symptomatic hypocalcemia after total thyroidectomy and which variable (total serum calcium, ionized calcium, corrected serum calcium for albumin with Payne's formula or early PTH) is the most valuable predictor of symptomatic hypocalcemia after total thyroidectomy.